精密波長板板座

The outer edge of the holder has an engraved 360 degrees scale with one degree markings. When a thumb screw is released, the holder fractional degree anglar positioning can be achieved.

When a thumb screw is tightened, precise adjustments can be made with a micrometer, a vernier scale located on the front face of the holder will allow one to read angle with an accuracy of five minutes.
These products are designed to hold Crystal Quarts Waveplates（retardation plates）. Two models are available, The standard and the precision.